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git/Documentation/git-diff-helper.txt

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[PATCH 3/3] Rename git-diff-tree-helper to git-diff-helper (part 2). It used to be that diff-tree needed helper support to parse its raw output to generate diffs, but these days git-diff-* family produces the same output and the helper is not tied to diff-tree anymore. Drop "tree" from its name. This follows the "rename only" commit to adjust the contents of the files involved. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Petr Baudis <pasky@ucw.cz>
20 years ago
git-diff-helper(1)
[PATCH] manpage name conflict This moves the git manpage to man7, since "git" isn't a direct command per se. It also does two other things: * Sort of works around the asciidoc 6.0.3 bug where the manpages all get called "git.1". It just renames them to what they should have been called. * Fixes a cut-n-paste bug in git-diff-helper.txt that was making asciidoc choke.
20 years ago
==================
[PATCH 1/4] split core-git.txt and update Split the core-git.txt file Formatting fix to the diff-format.txt Signed-off-by: David Greaves <david@dgreaves.com>
20 years ago
v0.1, May 2005
NAME
----
[PATCH 3/3] Rename git-diff-tree-helper to git-diff-helper (part 2). It used to be that diff-tree needed helper support to parse its raw output to generate diffs, but these days git-diff-* family produces the same output and the helper is not tied to diff-tree anymore. Drop "tree" from its name. This follows the "rename only" commit to adjust the contents of the files involved. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Petr Baudis <pasky@ucw.cz>
20 years ago
git-diff-helper - Generates patch format output for git-diff-*
[PATCH 1/4] split core-git.txt and update Split the core-git.txt file Formatting fix to the diff-format.txt Signed-off-by: David Greaves <david@dgreaves.com>
20 years ago
SYNOPSIS
--------
[PATCH] Introducing software archaeologist's tool "pickaxe". This steals the "pickaxe" feature from JIT and make it available to the bare Plumbing layer. From the command line, the user gives a string he is intersted in. Using the diff-core infrastructure previously introduced, it filters the differences to limit the output only to the diffs between <src> and <dst> where the string appears only in one but not in the other. For example: $ ./git-rev-list HEAD | ./git-diff-tree -Sdiff-tree-helper --stdin -M would show the diffs that touch the string "diff-tree-helper". In real software-archaeologist application, you would typically look for a few to several lines of code and see where that code came from. The "pickaxe" module runs after "rename/copy detection" module, so it even crosses the file rename boundary, as the above example demonstrates. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
20 years ago
'git-diff-helper' [-z] [-R] [-M] [-C] [-S<string>]
[PATCH 1/4] split core-git.txt and update Split the core-git.txt file Formatting fix to the diff-format.txt Signed-off-by: David Greaves <david@dgreaves.com>
20 years ago
DESCRIPTION
-----------
Reads output from "git-diff-cache", "git-diff-tree" and "git-diff-files" and
generates patch format output.
OPTIONS
-------
-z::
\0 line termination on input
-R::
Output diff in reverse. This is useful for displaying output from
"git-diff-cache" which always compares tree with cache or working
file. E.g.
[PATCH 3/3] Rename git-diff-tree-helper to git-diff-helper (part 2). It used to be that diff-tree needed helper support to parse its raw output to generate diffs, but these days git-diff-* family produces the same output and the helper is not tied to diff-tree anymore. Drop "tree" from its name. This follows the "rename only" commit to adjust the contents of the files involved. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Petr Baudis <pasky@ucw.cz>
20 years ago
git-diff-cache <tree> | git-diff-helper -R file.c
[PATCH] Diff-helper update This patch adds a framework and a stub implementation of rename detection to diff-helper program. The current stub code is just enough to detect pure renames in diff-tree output and not fancier. The plan is perhaps to use the same delta code when Nico's delta storage patch is merged for similarity evaluation purposes. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
20 years ago
would show a diff to bring the working file back to what
is in the <tree>.
[PATCH] Detect renames in diff family. This rips out the rename detection engine from diff-helper and moves it to the diff core, and updates the internal calling convention used by diff-tree family into the diff core. In order to give the same option name to diff-tree family as well as to diff-helper, I've changed the earlier diff-helper '-r' option to '-M' (stands for Move; sorry but the natural abbreviation 'r' for 'rename' is already taken for 'recursive'). Although I did a fair amount of test with the git-diff-tree with existing rename commits in the core GIT repository, this should still be considered beta (preview) release. This patch depends on the diff-delta infrastructure just committed. This implements almost everything I wanted to see in this series of patch, except a few minor cleanups in the calling convention into diff core, but that will be a separate cleanup patch. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
20 years ago
-M::
[PATCH] Diff-helper update This patch adds a framework and a stub implementation of rename detection to diff-helper program. The current stub code is just enough to detect pure renames in diff-tree output and not fancier. The plan is perhaps to use the same delta code when Nico's delta storage patch is merged for similarity evaluation purposes. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
20 years ago
Detect renames.
[PATCH] Diff overhaul, adding half of copy detection. This introduces the diff-core, the layer between the diff-tree family and the external diff interface engine. The calls to the interface diff-tree family uses (diff_change and diff_addremove) have not changed and will not change. The purpose of the diff-core layer is to provide an infrastructure to transform the set of differences sent from the applications, before sending them to the external diff interface. The recently introduced rename detection code has been rewritten to use the diff-core facility. When applications send in separate creates and deletes, matching ones are transformed into a single rename-and-edit diff, and sent out to the external diff interface as such. This patch also enhances the rename detection code further to be able to detect copies. Currently this happens only as long as copy sources appear as part of the modified files, but there already is enough provision for callers to report unmodified files to diff-core, so that they can be also used as copy source candidates. Extending the callers this way will be done in a separate patch. Please see and marvel at how well this works by trying out the newly added t/t4003-diff-rename-1.sh test script. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
20 years ago
-C::
Detect copies as well as renames.
[PATCH 1/4] split core-git.txt and update Split the core-git.txt file Formatting fix to the diff-format.txt Signed-off-by: David Greaves <david@dgreaves.com>
20 years ago
[PATCH] Introducing software archaeologist's tool "pickaxe". This steals the "pickaxe" feature from JIT and make it available to the bare Plumbing layer. From the command line, the user gives a string he is intersted in. Using the diff-core infrastructure previously introduced, it filters the differences to limit the output only to the diffs between <src> and <dst> where the string appears only in one but not in the other. For example: $ ./git-rev-list HEAD | ./git-diff-tree -Sdiff-tree-helper --stdin -M would show the diffs that touch the string "diff-tree-helper". In real software-archaeologist application, you would typically look for a few to several lines of code and see where that code came from. The "pickaxe" module runs after "rename/copy detection" module, so it even crosses the file rename boundary, as the above example demonstrates. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
20 years ago
-S<string>::
Look for differences that contains the change in <string>.
[PATCH 3/4] split core-git.txt and update Update git environment variable docs Update first section of command docs (Manipulation commands section) Signed-off-by: David Greaves <david@dgreaves.com>
20 years ago
See Also
--------
The section on generating patches in link:git-diff-cache.html[git-diff-cache]
[PATCH 1/4] split core-git.txt and update Split the core-git.txt file Formatting fix to the diff-format.txt Signed-off-by: David Greaves <david@dgreaves.com>
20 years ago
Author
------
[PATCH] Diff-helper update This patch adds a framework and a stub implementation of rename detection to diff-helper program. The current stub code is just enough to detect pure renames in diff-tree output and not fancier. The plan is perhaps to use the same delta code when Nico's delta storage patch is merged for similarity evaluation purposes. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
20 years ago
Written by Junio C Hamano <junkio@cox.net>
[PATCH 1/4] split core-git.txt and update Split the core-git.txt file Formatting fix to the diff-format.txt Signed-off-by: David Greaves <david@dgreaves.com>
20 years ago
Documentation
--------------
Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
GIT
---
Part of the link:git.html[git] suite